Answers

Add 7/90 and 21/90

7/90 + 21/90 is 14/45.

Steps for adding fractions

1. Add the two fractions:
   7/90 + 21/90 = 7 + 21/90 = 28/90
2. 28/90 simplified gives 14/45
3. So, 7/90 + 21/90 = 14/45

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